@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&family=JetBrains+Mono:ital,wght@0,400;0,500;1,400&display=swap");

:root {
    --font-ui: "Inter", sans-serif;
    --font-display: "Space Grotesk", sans-serif;
    --font-mono: "JetBrains Mono", monospace;
    --bg: #0d0e11;
    --surface: #111217;
    --surface-2: #16181f;
    --surface-3: #1d2028;
    --primary: #7dd3c7;
    --primary-dim: #5fc5b8;
    --primary-soft: rgba(125, 211, 199, 0.12);
    --secondary: #8c929d;
    --warning: #f59e0b;
    --error: #ef4444;
    --text: #c8ccd4;
    --text-bright: #f4f6f8;
    --text-dim: #737a86;
    --muted: #8c929d;
    --line: #252832;
    --line-dim: rgba(37, 40, 50, 0.7);
    --button-contrast: #07100f;
    --field-focus-bg: #0f1116;
    --placeholder: #5f6672;
    --button-bg: #171a21;
    --button-hover-bg: #20242d;
    --button-hover-border: #4a9f99;
    --button-hover-text: #f4f6f8;
    --primary-button-bg: linear-gradient(180deg, #86ddd2, #5fc5b8);
    --primary-button-hover-bg: linear-gradient(180deg, #93e6dc, #66cfc2);
    --sidebar-bg: #0b0c0f;
    --panel-bg: #111217;
    --panel-bg-soft: #151820;
    --warning-soft: rgba(245, 158, 11, 0.12);
    --error-soft: rgba(239, 68, 68, 0.12);
    --success-soft: rgba(110, 231, 183, 0.12);
    --overlay: rgba(2, 3, 6, 0.78);
    --accent-shadow: rgba(125, 211, 199, 0.1);
    --shadow-soft: 0 14px 38px rgba(0, 0, 0, 0.26);
    --shadow-subtle: 0 8px 20px rgba(0, 0, 0, 0.18);
    --radius-panel: 8px;
    --radius-card: 6px;
    --radius-control: 6px;
    --transition-fast: 120ms ease;
    --transition-base: 180ms ease;
    --transition-slow: 250ms ease;
    --workspace-gap: 1rem;
    --surface-hover: var(--surface-2);
    --theme-toggle-bg: var(--surface);
    --theme-toggle-track: var(--line);
    --theme-toggle-thumb: var(--primary);
    --theme-toggle-label: var(--text);
    --sidebar-width-expanded: 264px;
    --sidebar-width-collapsed: 76px;
    --sidebar-transition: var(--transition-base);
    --output-panel-expanded: 400px;
    --output-panel-collapsed: 64px;
    transition: background-color 200ms ease, color 200ms ease;
}

[data-theme="light"] {
    --bg: #f7f8fa;
    --surface: #ffffff;
    --surface-2: #f2f4f7;
    --surface-3: #e8ebf0;
    --primary: #0f9f92;
    --primary-dim: #0b8278;
    --primary-soft: rgba(15, 159, 146, 0.12);
    --secondary: #6b7280;
    --warning: #f59e0b;
    --error: #ef4444;
    --text: #374151;
    --text-bright: #111827;
    --text-dim: #9ca3af;
    --muted: #6b7280;
    --line: #dde1e7;
    --line-dim: #eceff3;
    --button-contrast: #ffffff;
    --field-focus-bg: #ffffff;
    --placeholder: #9ca3af;
    --button-bg: #f6f8fb;
    --button-hover-bg: #edf4f3;
    --button-hover-border: #0f9f92;
    --button-hover-text: #0f172a;
    --primary-button-bg: linear-gradient(180deg, #12b8a8, #0f9f92);
    --primary-button-hover-bg: linear-gradient(180deg, #0f9f92, #0b8278);
    --sidebar-bg: #eef1f5;
    --panel-bg: #ffffff;
    --panel-bg-soft: #f6f8fb;
    --warning-soft: rgba(245, 158, 11, 0.1);
    --error-soft: rgba(239, 68, 68, 0.09);
    --success-soft: rgba(34, 197, 94, 0.12);
    --overlay: rgba(17, 24, 39, 0.32);
    --accent-shadow: rgba(34, 197, 94, 0.12);
    --shadow-soft: 0 18px 48px rgba(15, 23, 42, 0.08);
    --shadow-subtle: 0 10px 26px rgba(15, 23, 42, 0.06);
    --theme-toggle-bg: #ffffff;
    --theme-toggle-track: #e5e7eb;
    --theme-toggle-thumb: #0f9f92;
    --theme-toggle-label: #111827;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition:
        background-color 200ms ease,
        color 200ms ease,
        border-color 200ms ease,
        box-shadow 200ms ease;
}
[hidden] {
    display: none !important;
}

@media (prefers-reduced-motion: reduce) {
    :root,
    *,
    *::before,
    *::after {
        transition: none !important;
    }
}

html,
body {
    max-width: 100%;
    overflow-x: clip;
}

body {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.018), transparent 12rem),
        var(--bg);
    color: var(--text);
    font-family: var(--font-ui);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
}

a {
    color: var(--primary);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* ── Typography ─────────────────────────────────────────── */

h1,
h2,
h3,
h4 {
    font-family: var(--font-display);
    color: var(--text-bright);
    font-weight: 600;
    line-height: 1.25;
}

h1 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
    color: var(--primary);
}

h2 {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0;
}

h3 {
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0;
    color: var(--text-bright);
    margin-bottom: 0.75rem;
}

h4 {
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
    color: var(--text-bright);
    margin-bottom: 0.5rem;
}

p {
    margin: 0;
}

.eyebrow {
    font-family: var(--font-ui);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0;
    color: var(--secondary);
    margin-bottom: 0.2rem;
}

.eyebrow::before {
    content: "";
}

.muted {
    color: var(--muted);
    font-family: var(--font-ui);
    font-size: 0.75rem;
}

/* ── Buttons ────────────────────────────────────────────── */

button,
.button-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-family: var(--font-ui);
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
    padding: 0.5rem 1rem;
    border: 1px solid var(--line);
    background: var(--button-bg);
    color: var(--text-bright);
    cursor: pointer;
    border-radius: var(--radius-control);
    transition:
        background 140ms ease,
        border-color 140ms ease,
        color 140ms ease;
    white-space: nowrap;
}

button:hover,
.button-link:hover {
    background: var(--button-hover-bg);
    color: var(--button-hover-text);
    border-color: var(--button-hover-border);
    text-decoration: none;
}

button[type="submit"] {
    background: var(--primary-button-bg);
    color: var(--button-contrast);
    border-color: var(--primary);
    width: auto;
    padding: 0.65rem 1rem;
}

button[type="submit"]:hover {
    background: var(--primary-button-hover-bg);
    border-color: var(--primary-dim);
}

.stack > button[type="submit"],
.prompt-editor-form > button[type="submit"],
.panel-narrow button[type="submit"],
.login-button {
    width: 100%;
}

.login-button {
    background: var(--primary);
    color: var(--button-contrast);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
    margin-top: 0.5rem;
}

.login-button:hover {
    background: var(--primary-dim);
}

button:disabled,
.button-link:disabled,
[aria-disabled="true"] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

button.ghost,
.ghost.button-link {
    border-color: var(--line);
    color: var(--text);
    background: transparent;
}

button.ghost:hover,
.ghost.button-link:hover {
    border-color: var(--line);
    color: var(--button-hover-text);
    background: var(--button-hover-bg);
}

.action-button {
    min-height: 2.35rem;
    padding-inline: 0.9rem;
    border-radius: var(--radius-control);
}

.action-button-primary {
    background: var(--primary-button-bg);
    border-color: var(--primary);
    color: var(--button-contrast);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.action-button-primary:hover,
.action-button-primary:focus-visible {
    background: var(--primary-button-hover-bg);
    border-color: var(--primary-dim);
    color: var(--button-contrast);
}

.action-button-secondary {
    background: var(--warning-soft);
    border-color: color-mix(in srgb, var(--warning) 48%, var(--line));
    color: var(--warning);
}

.action-button-secondary:hover,
.action-button-secondary:focus-visible {
    background: color-mix(in srgb, var(--warning) 12%, var(--button-hover-bg));
    border-color: var(--warning);
    color: var(--warning);
}

/* ── Form controls ──────────────────────────────────────── */

input,
textarea,
select {
    font-family: var(--font-ui);
    font-size: 0.78rem;
    width: 100%;
    padding: 0.5rem 0.65rem;
    background: color-mix(in srgb, var(--bg) 52%, var(--surface));
    border: 1px solid var(--line);
    color: var(--text);
    border-radius: var(--radius-control);
    outline: none;
    transition:
        background 140ms ease,
        border-color 140ms ease,
        box-shadow 140ms ease;
    appearance: none;
    -webkit-appearance: none;
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--primary);
    background: var(--field-focus-bg);
    color: var(--text-bright);
    box-shadow: 0 0 0 1px var(--primary-soft);
}

input::placeholder,
textarea::placeholder {
    color: var(--placeholder);
    font-style: normal;
}

textarea {
    resize: vertical;
}
input[type="checkbox"] {
    width: auto;
    appearance: auto;
    -webkit-appearance: checkbox;
    cursor: pointer;
    accent-color: var(--primary);
    padding: 0;
    margin: 0;
    flex: 0 0 auto;
}
input[type="file"] {
    color: var(--muted);
    font-size: 0.72rem;
}

select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23494847'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.65rem center;
    padding-right: 2rem;
}

select option {
    background: var(--surface);
    color: var(--text);
}

label {
    display: grid;
    gap: 0.3rem;
    font-family: var(--font-display);
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
    color: var(--secondary);
}

/* ── Shell layout ───────────────────────────────────────── */

.shell {
    display: grid;
    grid-template-columns: var(--sidebar-width-expanded) minmax(0, 1fr);
    min-height: 100vh;
    min-width: 0;
    transition: grid-template-columns var(--sidebar-transition);
}

.js-hydrating .shell,
.js-hydrating .sidebar,
.js-hydrating .output-panel-shell {
    transition: none !important;
}

.shell.is-sidebar-collapsed {
    grid-template-columns: var(--sidebar-width-collapsed) minmax(0, 1fr);
}

html[data-sidebar-collapsed="true"] .shell {
    grid-template-columns: var(--sidebar-width-collapsed) minmax(0, 1fr);
}

/* ── Sidebar ────────────────────────────────────────────── */

.sidebar {
    background: var(--sidebar-bg);
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    min-width: 0;
    transition: padding var(--sidebar-transition);
    overflow-x: visible;
}

.sidebar-head {
    display: grid;
    gap: 0.6rem;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    min-height: 3.5rem;
    padding-block: 0.25rem;
}

.sidebar-logo {
    display: block;
    width: 100%;
    height: auto;
    max-height: 3.25rem;
    object-fit: contain;
    object-position: left center;
}

.sidebar-main {
    display: grid;
    gap: 0;
    align-content: start;
    flex: 1;
    min-width: 0;
}

.sidebar-section {
    display: grid;
    gap: 0;
    padding: 0;
    border: 1px solid var(--line);
    border-top: 0;
    background: color-mix(in srgb, var(--sidebar-bg) 84%, var(--bg));
    overflow: hidden;
}

.sidebar-section-head {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.65rem;
    align-items: center;
}

.sidebar-section-copy {
    min-width: 0;
}

.sidebar-section-title {
    color: var(--text-bright);
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
    margin-bottom: 0.2rem;
}

.sidebar-accordion {
    padding: 0;
    overflow: hidden;
}

.sidebar-accordion-toggle {
    width: 100%;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0.75rem;
    min-height: 2.85rem;
    border: 0;
    background: transparent;
    color: inherit;
    text-transform: none;
    letter-spacing: 0;
}

.sidebar-accordion-toggle:hover {
    background: var(--button-hover-bg);
    color: inherit;
}

.sidebar-accordion-toggle .sidebar-section-head {
    min-width: 0;
}

.sidebar-section-title-row {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    min-width: 0;
}

.sidebar-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.5rem;
    padding: 0.05rem 0.35rem;
    border: 1px solid var(--line);
    color: var(--secondary);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    line-height: 1.2;
}

.sidebar-accordion-indicator {
    color: var(--primary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1;
}

.sidebar-accordion-body {
    border-top: 1px solid var(--line);
    background: var(--panel-bg-soft);
}

.sidebar-prompt-list {
    display: grid;
    gap: 0;
    max-height: min(46vh, 440px);
    overflow-y: auto;
}

.sidebar-prompt-item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.5rem;
    padding: 0.75rem;
    border-bottom: 1px solid var(--line);
    background: transparent;
}

.sidebar-prompt-item:last-child {
    border-bottom: 0;
}

.sidebar-prompt-item:hover {
    background: var(--button-hover-bg);
}

.sidebar-prompt-item.is-current {
    background: color-mix(in srgb, var(--primary) 9%, var(--panel-bg));
    box-shadow: inset 2px 0 0 var(--primary);
}

.sidebar-prompt-link {
    display: grid;
    gap: 0.35rem;
    min-width: 0;
    color: var(--text);
    text-decoration: none;
}

.sidebar-prompt-item:hover .sidebar-prompt-link {
    color: var(--text-bright);
    text-decoration: none;
}

.sidebar-prompt-title {
    color: var(--text-bright);
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    overflow-wrap: anywhere;
}

.sidebar-prompt-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    align-items: center;
}

.item-delete-form {
    align-self: start;
}

.item-delete-button,
.item-delete-button[type="submit"] {
    width: auto;
    min-width: 2.2rem;
    min-height: 2.2rem;
    padding: 0.35rem;
    border-color: var(--line);
    color: var(--secondary);
    background: transparent;
}

.item-delete-button:hover,
.item-delete-button[type="submit"]:hover {
    border-color: var(--error);
    color: var(--error);
    background: transparent;
}

.item-delete-button svg {
    width: 1rem;
    height: 1rem;
}

.item-delete-button:focus-visible {
    outline: 1px solid var(--primary);
    outline-offset: 2px;
}

.sidebar-badge,
.sidebar-status {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.08rem 0.35rem;
    border: 1px solid var(--line);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: 0;
}

.sidebar-badge {
    color: var(--primary);
    border-color: color-mix(in srgb, var(--primary) 28%, var(--line));
}

.sidebar-status {
    color: var(--secondary);
}

.sidebar-empty-state {
    padding: 0.75rem;
}

/* ── Navigation ─────────────────────────────────────────── */

.nav {
    display: grid;
    gap: 0.35rem;
    padding: 0.35rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background: color-mix(in srgb, var(--sidebar-bg) 88%, var(--bg));
}

.nav a {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.6rem 0.75rem;
    min-height: 2.85rem;
    font-family: var(--font-display);
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
    color: var(--secondary);
    border: 1px solid transparent;
    border-radius: var(--radius-control);
}

.nav a[aria-current="page"] {
    color: var(--primary);
    border-color: color-mix(in srgb, var(--primary) 30%, var(--line));
    background: color-mix(in srgb, var(--primary) 10%, transparent);
}

.nav a:hover {
    color: var(--primary);
    background: var(--button-hover-bg);
    border-color: var(--button-hover-border);
    text-decoration: none;
}

.nav-icon {
    display: inline-grid;
    place-items: center;
    width: 1.85rem;
    min-width: 1.85rem;
    height: 1.85rem;
    border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
    border-radius: 7px;
    background:
        linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 78%, transparent), transparent),
        var(--panel-bg);
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0;
    transition:
        color var(--transition-base),
        border-color var(--transition-base),
        background var(--transition-base);
}

.nav a:hover .nav-icon,
.nav a[aria-current="page"] .nav-icon {
    border-color: color-mix(in srgb, var(--primary) 45%, var(--line));
    color: var(--primary);
    background: color-mix(in srgb, var(--primary) 10%, var(--panel-bg));
}

.nav-icon svg,
.output-panel-icon svg {
    width: 0.98rem;
    height: 0.98rem;
}

.nav-label,
.sidebar-action-label {
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ── Main content ───────────────────────────────────────── */

.main {
    padding: 1.15rem;
    min-height: 100vh;
    min-width: 0;
}

.studio-main {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
}

/* ── Hero ───────────────────────────────────────────────── */

.hero {
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--line);
}

.studio-topbar {
    flex: 0 0 auto;
    margin-bottom: 1rem;
}

.studio-composer-topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    padding-bottom: 0.85rem;
    margin-bottom: 0.8rem;
    border-bottom: 1px solid var(--line);
}

.studio-composer-topbar-copy {
    display: grid;
    gap: 0.35rem;
    min-width: 0;
}

.studio-composer-title-row {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    flex-wrap: wrap;
}

.studio-composer-title-row h2 {
    margin: 0;
}

.studio-composer-topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.studio-run-button {
    min-width: 6.5rem;
}

.hero h2 {
    font-size: 1.05rem;
    margin: 0.2rem 0 0.4rem;
}

.inline-between {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
    flex-wrap: wrap;
}

/* ── Grid system ────────────────────────────────────────── */

.grid {
    display: grid;
    gap: 1rem;
}
.grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid.three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid.compact {
    gap: 0.5rem;
}

.grid > * {
    min-width: 0;
}

/* Workspace layout: two-column desktop, stacked editor on tablet/mobile. */
.workspace-grid {
    align-items: start;
    grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
}

.studio-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
    gap: var(--workspace-gap);
    align-items: stretch;
    position: relative;
    height: calc(100vh - 8.5rem);
    min-height: 520px;
    flex: 0 0 auto;
    overflow: hidden;
}

.studio-composer-panel {
    min-width: 0;
    min-height: 0;
}

.studio-composer-panel {
    grid-column: 1;
    grid-row: 1;
}

.studio-composer-panel {
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-padding-block: 1rem;
}

.studio-panel-head {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.studio-panel-head h3 {
    margin-bottom: 0;
}

.studio-status-pill {
    display: inline-flex;
    align-items: center;
    min-height: 1.55rem;
    padding: 0.2rem 0.5rem;
    border: 1px solid color-mix(in srgb, var(--primary) 30%, var(--line));
    border-radius: var(--radius-control);
    background: color-mix(in srgb, var(--primary-soft) 64%, transparent);
    color: var(--primary);
    font-family: var(--font-ui);
    font-size: 0.66rem;
    font-weight: 700;
}

.studio-placeholder,
.studio-preview-placeholder {
    display: grid;
    place-items: center;
    gap: 0.35rem;
    min-height: 220px;
    padding: 1.25rem;
    border: 1px dashed var(--line);
    border-radius: var(--radius-card);
    background: var(--surface-2);
    text-align: center;
}

.studio-preview-title {
    margin: 0;
}

.studio-preview-body {
    display: grid;
    gap: 0.5rem;
}

.prompt-result-summary-panel {
    display: grid;
    gap: 0.45rem;
}

.prompt-result-summary-toggle,
.prompt-result-summary-toggle[type="button"] {
    width: 100%;
    min-height: 2rem;
    padding: 0.25rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 0;
    border-bottom: 1px solid var(--line-dim);
    border-radius: 0;
    background: transparent;
    color: var(--text-dim);
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0;
}

.prompt-result-summary-toggle:hover,
.prompt-result-summary-toggle:focus-visible,
.prompt-result-summary-toggle[type="button"]:hover,
.prompt-result-summary-toggle[type="button"]:focus-visible {
    background: transparent;
    border-color: var(--line);
    color: var(--text);
}

.prompt-result-summary-toggle-icon {
    font-family: var(--font-ui);
    font-size: 0.72rem;
    color: currentColor;
}

.prompt-result-summary-panel.is-collapsed {
    gap: 0;
}

.prompt-result-summary[hidden] {
    display: none;
}

.preview-block {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.75rem;
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--line-dim);
}

.preview-block:last-child {
    border-bottom: 0;
}

.preview-block-label {
    margin: 0;
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0;
    color: var(--text-dim);
    flex: 0 0 auto;
}

.preview-block-value {
    margin: 0;
    font-family: var(--font-ui);
    font-size: 0.8rem;
    color: var(--text);
    text-align: right;
    word-break: break-word;
}

.studio-preview-thumb-placeholder {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
    color: var(--text-dim);
}

.studio-preview-thumb-placeholder svg {
    width: 20px;
    height: 20px;
}

.studio-placeholder-title {
    color: var(--text-bright);
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 700;
}

.workspace-panel,
.workspace-panel-primary,
.workspace-panel-secondary {
    min-width: 0;
}

.workspace-grid > :only-child {
    grid-column: 1 / -1;
}

[data-output-workspace] {
    grid-template-columns: minmax(0, 1fr);
}

[data-output-workspace].is-output-panel-collapsed {
    grid-template-columns: minmax(0, 1fr);
}

html:not([data-output-panel-expanded="true"]) [data-output-workspace] {
    grid-template-columns: minmax(0, 1fr);
}

/* ── Panel ──────────────────────────────────────────────── */

.panel {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.018), transparent 14rem),
        var(--panel-bg);
    border: 1px solid var(--line);
    border-radius: var(--radius-panel);
    box-shadow: none;
    padding: 1.1rem;
    min-width: 0;
    overflow: hidden;
}

.panel.studio-composer-panel {
    overflow-x: hidden;
    overflow-y: auto;
}

.studio-composer-panel > .inline-between {
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0;
}

.studio-composer-panel > .inline-between h3 {
    margin-bottom: 0;
}

.studio-composer-panel > .inline-between .muted {
    margin-top: 0.2rem;
}

.panel-narrow {
    max-width: 380px;
    margin: 5rem auto;
}

/* ── Stack / List ───────────────────────────────────────── */

.stack {
    display: grid;
    gap: 0.85rem;
}
.list {
    display: grid;
    gap: 0;
}

.stack > *,
.list > * {
    min-width: 0;
}

/* ── Card link ──────────────────────────────────────────── */

.card-link {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    padding: 0.65rem 0.75rem;
    border: 1px solid var(--line);
    border-top: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    min-width: 0;
}

.list .card-link:first-child {
    border-top: 1px solid var(--line);
}

.card-link:hover {
    background: var(--button-hover-bg);
    color: var(--text-bright);
    text-decoration: none;
    border-color: var(--button-hover-border);
}

.card-link:hover .muted {
    color: var(--secondary);
}

.card-link strong {
    display: block;
    color: var(--text-bright);
    font-family: var(--font-display);
    font-size: 0.82rem;
    font-weight: 600;
    margin-bottom: 0.1rem;
    overflow-wrap: anywhere;
}

/* ── Alert / status messages ─────────────────────────────── */

.alert {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--error);
    background: var(--error-soft);
    color: var(--error);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    border-radius: 0;
}

.alert::before {
    content: "[ERR] ";
    font-weight: 700;
}

.alert.ok {
    border-color: var(--primary);
    background: var(--success-soft);
    color: var(--primary);
}

.alert.ok::before {
    content: "[OK] ";
}

.alert.warn {
    border-color: var(--warning);
    background: var(--warning-soft);
    color: var(--warning);
}

.alert.warn::before {
    content: "[WARN] ";
}

.alert-message {
    flex: 1 1 auto;
    min-width: 0;
    overflow-wrap: anywhere;
}

.alert-dismiss {
    flex: 0 0 auto;
    min-width: 1.6rem;
    min-height: 1.6rem;
    padding: 0;
    border: 1px solid currentColor;
    background: transparent;
    color: inherit;
    font: inherit;
    font-size: 0.95rem;
    line-height: 1;
}

.alert-dismiss:hover,
.alert-dismiss:focus-visible {
    background: var(--button-hover-bg);
    outline: none;
}

/* ── Toolbar ─────────────────────────────────────────────── */

.toolbar {
    display: flex;
    gap: 0.35rem;
    margin-bottom: 0.5rem;
}

.toolbar button {
    padding: 0.3rem 0.55rem;
    font-size: 0.62rem;
}

/* ── Editor shell ────────────────────────────────────────── */

.editor-shell {
    display: grid;
    gap: 0;
    border: 1px solid var(--line);
    background: var(--bg);
    min-width: 0;
}

.editor-shell-collapsible.is-collapsed {
    border-color: var(--line);
}

.editor-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
    padding: 0.75rem 1rem;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
}

.editor-header h4 {
    color: var(--text-bright);
    margin-bottom: 0.15rem;
    font-size: 0.7rem;
}

.editor-header .muted {
    font-size: 0.68rem;
    margin-top: 0.25rem;
}

.editor-toggle {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
    width: 100%;
    padding: 0.75rem 1rem;
    border: 0;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
    color: inherit;
    text-align: left;
    cursor: pointer;
    min-width: 0;
}

.editor-toggle:hover {
    background: var(--button-hover-bg);
    color: inherit;
}

.editor-toggle:focus-visible {
    outline: 1px solid var(--primary);
    outline-offset: -1px;
}

.editor-shell.is-collapsed .editor-toggle {
    border-bottom: 0;
}

.editor-toggle-copy {
    display: grid;
    gap: 0.15rem;
    min-width: 0;
}

.editor-toggle-title {
    color: var(--text-bright);
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
}

.editor-toggle .muted {
    display: block;
    font-size: 0.68rem;
    margin-top: 0.15rem;
}

.editor-toggle-indicator {
    color: var(--primary);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1;
    padding-top: 0.15rem;
}

.editor-grid {
    display: grid;
    gap: 0;
    min-width: 0;
}

.editor-body {
    min-width: 0;
    min-height: 0;
}

.editor-section {
    display: grid;
    gap: 0;
    padding: 0; /* Padding moved to toggle and body */
    border-bottom: 1px solid var(--line);
    min-width: 0;
    position: relative;
    border-left: 3px solid transparent;
}

.editor-section-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 1.25rem 1rem;
    border: 0;
    background: transparent;
    color: inherit;
    cursor: pointer;
    text-align: left;
    transition: box-shadow 0.2s ease;
}

.editor-section-toggle:hover {
    background: transparent !important;
    color: inherit !important;
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--section-accent) 42%, var(--line));
}

.editor-section-toggle h4 {
    margin-bottom: 0;
}

.editor-section-indicator {
    color: var(--section-accent);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.editor-section-body {
    padding: 0 1rem 1.25rem;
}

.editor-section.is-collapsed .editor-section-body {
    padding-top: 0;
    padding-bottom: 0;
}

.editor-subsection {
    display: grid;
    gap: 0;
    border: 1px solid var(--line);
    background: var(--panel-bg-soft);
}

.editor-subsection + .editor-subsection {
    margin-top: 0.85rem;
}

.editor-subsection-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 0.9rem 1rem;
    border: 0;
    background: transparent;
    color: inherit;
    cursor: pointer;
    text-align: left;
}

.editor-subsection-toggle:hover {
    background: var(--surface);
    color: inherit;
}

.editor-subsection-copy {
    display: grid;
    gap: 0.15rem;
}

.editor-subsection-copy h5 {
    margin: 0;
    color: var(--text-bright);
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
}

.editor-subsection-indicator {
    color: var(--secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.editor-subsection-body {
    display: grid;
    gap: 0.85rem;
    padding: 0 1rem 1rem;
}

.editor-subsection.is-collapsed .editor-subsection-body {
    display: none;
}

.technical-settings-grid {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.technical-toggle-grid {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.editor-section[data-layer-key="cinematography"] {
    --section-accent: var(--primary);
}

.editor-section[data-layer-key="cast"] {
    --section-accent: #c4b26c;
}

.editor-section[data-layer-key="scene"] {
    --section-accent: #68a6c9;
}

.editor-section[data-layer-key="style"] {
    --section-accent: #b7a7d9;
}

.editor-section[data-layer-key="audio"] {
    --section-accent: #c99867;
}

.editor-section[data-layer-key="output"] {
    --section-accent: var(--secondary);
}

.editor-section h4 {
    margin-bottom: 0.5rem;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0;
    font-size: 0.72rem;
    color: var(--text-bright);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.editor-section h4::before {
    content: "";
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 50%;
    background: var(--section-accent, var(--primary));
    opacity: 0.88;
}

.editor-section.composer-layer {
    margin-bottom: 0.75rem;
    border: 1px solid var(--line-dim);
    border-left: 2px solid var(--section-accent, transparent);
    border-radius: var(--radius-card);
    background: color-mix(in srgb, var(--panel-bg-soft) 82%, transparent);
    overflow: hidden;
}

.editor-section.composer-layer:last-child {
    margin-bottom: 0;
}

.editor-section.composer-layer:not(.is-collapsed) {
    border-left-color: var(--section-accent, var(--primary-soft));
    background: var(--panel-bg);
}

.editor-section.composer-layer .editor-section-toggle {
    padding: 1rem 1.25rem;
    background: transparent;
}

.editor-section.composer-layer .editor-section-toggle:hover {
    background: var(--button-hover-bg) !important;
    box-shadow: none;
}

.editor-section.composer-layer .editor-section-body {
    padding: 0 1.25rem 1.1rem;
    overflow: visible;
    max-height: none;
    opacity: 1;
}

.editor-section.is-collapsed .editor-section-body {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    overflow: hidden;
}

.editor-section.composer-layer h4 {
    margin: 0;
    font-family: var(--font-display);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0;
    text-transform: uppercase;
}

.composer-layer-heading {
    display: grid;
    gap: 0.32rem;
    min-width: 0;
}

.composer-layer-summary {
    margin: 0;
    color: var(--text-dim);
    font-family: var(--font-ui);
    font-size: 0.8rem;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-height: 0;
    opacity: 0;
}

.composer-layer-summary.is-visible {
    margin-top: 0.18rem;
    max-height: 3rem;
    opacity: 1;
}

.composer-layer-summary.is-empty {
    color: var(--text-dim);
    font-style: italic;
}

.editor-section.composer-layer label {
    color: var(--text-dim);
    font-size: 0.78rem;
    font-weight: 500;
}

.editor-section.composer-layer input,
.editor-section.composer-layer textarea,
.editor-section.composer-layer select {
    background: color-mix(in srgb, var(--bg) 48%, var(--surface-2));
    color: var(--text);
}

.audio-block-body {
    display: grid;
    gap: 1rem;
}

.audio-dialogue-summary {
    padding: 0.75rem;
    border-radius: var(--radius-control);
    background: var(--surface-2);
}

.audio-dialogue-summary-text {
    margin-top: 0.25rem;
}

.voice-settings-shell {
    display: grid;
    gap: 0.9rem;
    padding: 1rem;
    border: 1px solid var(--line);
    background: var(--panel-bg-soft);
}

.voice-settings-heading {
    display: grid;
    gap: 0.2rem;
    min-width: 0;
}

.voice-settings-intro {
    margin: 0;
    max-width: 44ch;
    font-size: 0.7rem;
    line-height: 1.45;
}

.voice-settings-toolbar {
    align-items: start;
    gap: 0.75rem;
}

.voice-defaults-button,
.voice-defaults-button[type="button"] {
    width: auto;
    min-height: 2.2rem;
    padding: 0.4rem 0.75rem;
    border-color: var(--line);
    color: var(--secondary);
}

.voice-defaults-button:hover,
.voice-defaults-button[type="button"]:hover {
    border-color: var(--button-hover-border);
    color: var(--button-hover-text);
    background: var(--button-hover-bg);
}

.voice-settings-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.85rem;
}

.voice-setting-card {
    display: grid;
    gap: 0.65rem;
    min-width: 0;
    padding: 0.85rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background: color-mix(in srgb, var(--surface) 76%, var(--bg));
}

.voice-setting-card .eyebrow {
    margin: 0;
    font-size: 0.58rem;
}

.voice-settings-toggle {
    min-height: 2.75rem;
    align-items: center;
    justify-content: flex-start;
    padding-inline: 0.85rem;
}

.voice-settings-footer {
    display: grid;
}

@media (max-width: 1024px) {
    .voice-settings-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.editor-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    padding: 1.25rem 1rem;
    border-top: 1px solid var(--line);
    background: var(--surface);
}

.editor-action {
    min-width: 200px;
    background: var(--primary) !important;
    color: var(--button-contrast) !important;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
    box-shadow: var(--shadow-subtle);
}

@media (max-width: 767px) {
    .editor-section {
        padding: 1.5rem 1.15rem;
    }

    .voice-settings-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .editor-footer {
        flex-direction: column;
    }

    .editor-action {
        width: 100%;
        min-height: 52px !important;
    }
}

.subject-section-head {
    align-items: flex-start;
}

.video-mode-toggle {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0 0 1rem;
    padding: 0;
    border: 0;
}

.video-mode-toggle legend {
    width: 100%;
    margin-bottom: 0.15rem;
    color: var(--muted);
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
}

.video-mode-option {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 38px;
    padding: 0.45rem 0.7rem;
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
}

.video-mode-option:has(input:checked) {
    border-color: var(--primary);
    color: var(--text-bright);
    box-shadow: inset 0 0 0 1px var(--primary);
}

.environment-scene-fields {
    display: grid;
    gap: 0.85rem;
}

.subject-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.subject-slots {
    display: grid;
    gap: 0.75rem;
}

.subject-slot {
    display: grid;
    gap: 0.75rem;
    padding: 0.85rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--surface);
    min-width: 0;
    box-shadow: var(--shadow-subtle);
}

.subject-slot.is-conflicting-reference {
    border-color: var(--warning);
    background: var(--warning-soft);
}

.subject-slot-head {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
}

.subject-slot-caption {
    display: block;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
}

.subject-dialogue-anchor {
    display: grid;
    gap: 0.55rem;
    border-top: 1px dashed var(--line);
    padding-top: 0.75rem;
}

.subject-dialogue-head {
    align-items: center;
}

.subject-dialogue-emitter {
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
}

.subject-dialogue-lines {
    display: grid;
    gap: 0.55rem;
}

.subject-dialogue-line {
    border: 1px solid var(--line);
    border-left: 3px solid var(--primary);
    background: var(--surface);
    padding: 0.65rem;
    display: grid;
    gap: 0.55rem;
}

.subject-slot[data-subject-role="secondary"] .subject-dialogue-line {
    border-left-color: var(--warning);
}

.subject-slot[data-subject-role="tertiary"] .subject-dialogue-line {
    border-left-color: var(--secondary);
}

.scene-stack {
    display: grid;
    gap: 0.75rem;
}

.asset-grid {
    display: grid;
    gap: 0.75rem;
}

.asset-grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.asset-grid.two:has([data-asset-kind="frame"]) {
    grid-template-columns: 1fr;
}

.asset-grid.three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.asset-card {
    display: grid;
    gap: 0.75rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    padding: 0.85rem;
    background: var(--surface);
    min-width: 0;
    transition:
        opacity 200ms ease,
        border-color var(--transition-base);
}

.asset-card:hover {
    border-color: var(--primary);
}

.asset-card.is-uploading {
    opacity: 0.6;
}

.asset-card-head {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    align-items: flex-start;
}

.asset-card-caption {
    display: block;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.68rem;
}

.asset-upload {
    display: grid;
    gap: 0.45rem;
    color: var(--secondary);
}

.asset-upload span {
    font-family: var(--font-ui);
    font-size: 0.72rem;
    text-transform: none;
    letter-spacing: 0;
}

.asset-upload input[type="file"] {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    color: var(--muted);
    font-family: var(--font-ui);
    font-size: 0.72rem;
}

.asset-card[data-asset-kind="frame"] {
    grid-template-columns: minmax(112px, 0.78fr) minmax(128px, 1fr);
    align-items: start;
    gap: 0.65rem 0.75rem;
    padding: 0.75rem;
}

.asset-card[data-asset-kind="frame"] .asset-card-head {
    grid-column: 1;
    grid-row: 1;
    align-items: flex-start;
}

.asset-card[data-asset-kind="frame"] .asset-card-head > div {
    min-width: 0;
}

.asset-card[data-asset-kind="frame"] .asset-card-caption {
    display: none;
    max-width: 18ch;
}

.asset-card[data-asset-kind="frame"] .eyebrow {
    font-size: 0.68rem;
}

.asset-card[data-asset-kind="frame"] [data-asset-remove] {
    width: 1.85rem;
    min-width: 1.85rem;
    height: 1.85rem;
    min-height: 1.85rem;
    padding: 0;
    overflow: hidden;
    color: transparent;
    position: relative;
}

.asset-card[data-asset-kind="frame"] [data-asset-remove]::before {
    content: "×";
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: var(--text-dim);
    font-family: var(--font-ui);
    font-size: 1rem;
    line-height: 1;
}

.asset-card[data-asset-kind="frame"] .asset-upload {
    grid-column: 1;
    grid-row: 2;
    gap: 0.35rem;
    align-self: end;
}

.asset-card[data-asset-kind="frame"] .asset-upload span {
    display: inline-flex;
    align-items: center;
    color: var(--text-dim);
    font-size: 0.68rem;
}

.asset-card[data-asset-kind="frame"] .asset-preview {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: stretch;
    gap: 0.35rem;
}

.asset-card[data-asset-kind="frame"] .asset-preview img {
    aspect-ratio: 16 / 10;
    height: auto;
}

.prompt-workspace-shell .asset-card[data-asset-kind="frame"] .asset-preview img {
    aspect-ratio: 16 / 10;
}

.asset-card[data-asset-kind="frame"] .asset-preview [data-asset-meta] {
    margin: 0;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.68rem;
}

.asset-card[data-asset-kind="frame"] .asset-preview.is-hidden {
    display: block;
    min-height: 6.9rem;
    border: 1px dashed var(--line);
    border-radius: var(--radius-control);
    background: color-mix(in srgb, var(--surface) 72%, var(--bg));
}

.reference-drawer {
    border: 1px solid var(--line-dim);
    border-radius: var(--radius-control);
    overflow: hidden;
    background: var(--surface);
}

.reference-drawer-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.6rem 0.85rem;
    background: var(--surface);
    border: 0;
    color: var(--text);
    font-family: var(--font-ui);
    font-size: 0.78rem;
    cursor: pointer;
    list-style: none;
}

.reference-drawer-toggle::-webkit-details-marker {
    display: none;
}

.reference-drawer-toggle::marker {
    display: none;
}

.reference-drawer-toggle:hover {
    background: var(--button-hover-bg);
}

.reference-drawer-count {
    margin-left: auto;
    color: var(--muted);
    font-size: 0.7rem;
}

.reference-drawer-indicator {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--muted);
    transition: transform 200ms ease;
}

.reference-drawer[open] .reference-drawer-indicator {
    transform: rotate(90deg);
}

.reference-drawer .asset-grid {
    padding: 0.5rem 0.85rem 0.85rem;
}

.asset-preview {
    display: grid;
    gap: 0.5rem;
}

.asset-preview img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border: 1px solid var(--line);
    background: var(--bg);
}

.prompt-editor-form,
.hero > *,
.inline-between > *,
.subject-slot-head > *,
.asset-card-head > *,
.output-panel > *,
.sidebar-footer > * {
    min-width: 0;
}

.hero-action-form {
    min-width: min(220px, 100%);
}

.hero-action-form button {
    width: 100%;
}

.voice-library-head {
    align-items: center;
    margin-bottom: 0.5rem;
}

.voice-library-head h4 {
    margin-bottom: 0;
}

.voice-sync-button,
.voice-sync-button[type="submit"] {
    width: auto;
    min-height: 2.2rem;
    padding: 0.4rem 0.75rem;
    border-color: var(--line);
    color: var(--secondary);
    background: transparent;
}

.voice-sync-button:hover,
.voice-sync-button[type="submit"]:hover {
    border-color: var(--button-hover-border);
    color: var(--button-hover-text);
    background: var(--button-hover-bg);
}

.voice-script-shell {
    display: grid;
    gap: 0.85rem;
}

.voice-script-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.voice-script-tool,
.voice-script-tool[type="button"] {
    width: auto;
    min-height: 2.15rem;
    padding: 0.35rem 0.65rem;
    border-color: var(--line);
    color: var(--secondary);
    background: transparent;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0;
    text-transform: none;
}

.voice-script-tool:hover,
.voice-script-tool[type="button"]:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--button-hover-bg);
}

.voice-script-shell textarea[data-voice-script] {
    min-height: 12rem;
    line-height: 1.6;
}

.voice-ssml-preview-shell {
    display: grid;
    gap: 0.55rem;
    padding: 0.85rem;
    border: 1px solid var(--line);
    background: var(--bg);
}

.voice-ssml-preview-head {
    align-items: center;
    gap: 0.75rem;
}

.voice-ssml-preview-head .eyebrow,
.voice-ssml-preview-caption {
    margin: 0;
}

.voice-ssml-preview-caption {
    font-size: 0.68rem;
}

.voice-ssml-preview {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    line-height: 1.65;
    color: var(--text);
}

.voice-ssml-empty {
    color: var(--muted);
    font-style: italic;
}

.voice-ssml-tag {
    color: var(--primary);
}

.voice-ssml-tag-name {
    color: var(--text-bright);
}

.voice-ssml-attr {
    color: var(--warning);
}

.voice-ssml-string {
    color: #8dd8ff;
}

.muted,
.mono-meta,
.card-note,
.asset-card-caption,
.subject-slot-caption {
    overflow-wrap: anywhere;
}

.modal-open {
    overflow: hidden;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 50;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: var(--overlay);
}

.modal-panel {
    position: relative;
    z-index: 1;
    width: min(560px, calc(100vw - 2rem));
    margin: 4rem auto;
    padding: 1.1rem;
    border: 1px solid var(--line);
    background: var(--surface);
    box-shadow: 0 0 0 1px var(--accent-shadow);
}

/* ── Prompt text override ───────────────────────────────── */

.prompt-editor-form {
    grid-template-columns: minmax(260px, 330px) minmax(0, 1fr);
    grid-template-rows: auto auto auto auto auto minmax(0, 1fr) auto;
    grid-auto-flow: row dense;
    align-items: start;
    gap: 0.7rem 0.95rem;
    min-height: clamp(520px, calc(100vh - 10rem), 760px);
}

.prompt-tool-title,
.prompt-tool-meta,
.prompt-workspace-shell,
.prompt-actions,
.prompt-editor-form > .editor-alert,
.prompt-editor-form > [data-voice-editor] {
    grid-column: 1;
}

.prompt-tool-title {
    grid-row: 1;
    margin-bottom: 0;
}

.prompt-project-meta {
    grid-row: 2;
}

.prompt-mode-meta {
    grid-row: 3;
}

.prompt-model-meta {
    grid-row: 4;
}

.prompt-tool-title input,
.prompt-tool-meta select,
.prompt-tool-meta input {
    min-height: 2.35rem;
}

.prompt-tool-meta {
    gap: 0.45rem;
}

.content-field-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.content-regenerate-button,
.content-regenerate-button[type="button"] {
    width: auto;
    min-height: 1.85rem;
    padding: 0.25rem 0.55rem;
    font-size: 0.58rem;
    line-height: 1;
    letter-spacing: 0;
    white-space: nowrap;
}

.prompt-workspace-textarea {
    display: grid;
    gap: 0.55rem;
    grid-column: 1;
    grid-row: 6;
    align-self: stretch;
    min-height: 0;
}

.prompt-workspace-textarea textarea {
    min-height: 210px;
    resize: vertical;
    line-height: 1.6;
    font-size: 0.95rem;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.016), transparent 34%),
        var(--panel-bg-soft);
    border-color: var(--line);
}

.prompt-workspace-textarea textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary-soft);
}

.prompt-workspace-shell {
    grid-row: 5;
    border-color: var(--line-dim);
    background: color-mix(in srgb, var(--surface) 70%, var(--bg));
    max-height: min(44vh, 460px);
    overflow-y: auto;
    overflow-x: hidden;
}

.prompt-editor-form.is-frames-mode .prompt-workspace-shell {
    max-height: none;
    overflow: visible;
    border-color: color-mix(in srgb, var(--primary) 35%, var(--line));
    background:
        linear-gradient(180deg, rgba(125, 211, 199, 0.04), transparent 16rem),
        color-mix(in srgb, var(--surface) 74%, var(--bg));
}

.prompt-editor-form.is-frames-mode [data-frames-mode-hidden] {
    display: none;
}

.prompt-editor-form.is-frames-mode [data-layer-key="output"] {
    order: 1;
}

.prompt-editor-form.is-frames-mode [data-layer-key="audio"] {
    order: 2;
}

.prompt-editor-form.is-frames-mode .prompt-workspace-shell .editor-grid {
    gap: 0.55rem;
}

.prompt-editor-form.is-frames-mode .asset-card[data-asset-kind="frame"] {
    grid-template-columns: 1fr;
    gap: 0.65rem;
}

.prompt-editor-form.is-frames-mode .asset-card[data-asset-kind="frame"] .asset-card-head,
.prompt-editor-form.is-frames-mode .asset-card[data-asset-kind="frame"] .asset-upload,
.prompt-editor-form.is-frames-mode .asset-card[data-asset-kind="frame"] .asset-preview {
    grid-column: 1;
    grid-row: auto;
}

.prompt-editor-form.is-frames-mode .asset-card[data-asset-kind="frame"] .asset-preview img {
    aspect-ratio: 16 / 9;
}

.prompt-editor-form.is-frames-mode .asset-card[data-asset-kind="frame"] .asset-preview.is-hidden {
    min-height: 8.4rem;
}

.prompt-result-stage {
    grid-column: 2;
    grid-row: 1 / 8;
    align-self: start;
    margin-top: -1.35rem;
    height: clamp(500px, calc(100vh - 12.5rem), 660px);
    min-height: 0;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    gap: 0.85rem;
    padding: 0.45rem 1rem 1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-panel);
    background:
        linear-gradient(180deg, rgba(125, 211, 199, 0.045), transparent 18rem),
        var(--panel-bg-soft);
}

.studio-composer-panel.has-active-prompt .prompt-result-stage {
    margin-top: -1.35rem;
    height: clamp(500px, calc(100vh - 12.5rem), 660px);
}

.prompt-result-stage-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.75rem;
}

.prompt-result-stage-tools {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.prompt-result-expand,
.prompt-result-expand[type="button"] {
    width: 2rem;
    min-width: 2rem;
    height: 2rem;
    min-height: 2rem;
    padding: 0;
    display: grid;
    place-items: center;
    border-radius: var(--radius-control);
}

.prompt-result-expand-icon {
    width: 1rem;
    height: 1rem;
}

.prompt-result-expand-icon-close {
    display: none;
}

body.is-visualization-expanded {
    overflow: hidden;
}

body.is-visualization-expanded::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 1100;
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    backdrop-filter: blur(10px);
}

.prompt-result-stage.is-expanded {
    position: fixed;
    inset: 1rem;
    z-index: 1110;
    margin: 0;
    height: auto;
    min-height: 0;
    grid-template-rows: auto minmax(0, 1fr) auto;
    padding: 0.85rem;
    border-color: color-mix(in srgb, var(--primary) 35%, var(--line));
    background:
        linear-gradient(180deg, rgba(125, 211, 199, 0.05), transparent 22rem),
        var(--surface);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

.prompt-result-stage.is-expanded .prompt-result-expand-icon-open {
    display: none;
}

.prompt-result-stage.is-expanded .prompt-result-expand-icon-close {
    display: block;
}

.prompt-result-stage.is-expanded .prompt-result-output {
    grid-template-rows: minmax(0, 1fr) auto;
}

.prompt-result-stage.is-expanded .prompt-result-media,
.prompt-result-stage.is-expanded .prompt-result-empty {
    min-height: 0;
}

.prompt-result-stage.is-expanded .prompt-result-media video {
    max-height: calc(100vh - 12rem);
}

.prompt-result-output {
    display: grid;
    grid-template-rows: minmax(0, 1fr) auto;
    gap: 0.85rem;
    min-height: 0;
    overflow: hidden;
}

.prompt-result-media {
    min-height: 0;
    display: grid;
    place-items: center;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: color-mix(in srgb, var(--bg) 88%, #000);
}

.prompt-result-media video,
.prompt-result-media audio {
    width: 100%;
}

.prompt-result-media video {
    height: 100%;
    object-fit: contain;
    background: #000;
}

.prompt-result-empty {
    min-height: 0;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 0.55rem;
    text-align: center;
    border: 1px dashed var(--line);
    border-radius: var(--radius-card);
    background: color-mix(in srgb, var(--surface) 72%, var(--bg));
}

.prompt-result-empty .studio-preview-thumb-placeholder {
    width: 4.75rem;
    height: 3.2rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background: var(--surface-2);
}

.prompt-result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.prompt-result-actions .button,
.prompt-result-actions .button-link,
.prompt-result-actions button {
    min-height: 2.35rem;
    padding: 0.45rem 0.75rem;
    font-size: 0.62rem;
    letter-spacing: 0;
}

.prompt-result-summary {
    align-self: end;
    max-height: 9.5rem;
    overflow-y: auto;
    padding-top: 0.2rem;
}

.prompt-workspace-shell .editor-grid {
    grid-template-columns: 1fr;
    gap: 0.65rem;
    padding: 0.75rem;
}

.prompt-workspace-shell .editor-section,
.prompt-workspace-shell .editor-subsection,
.prompt-workspace-shell .asset-card,
.prompt-workspace-shell .subject-slot {
    border-radius: 8px;
}

.prompt-workspace-shell .editor-section-toggle,
.prompt-workspace-shell .editor-subsection-toggle {
    min-height: 2.65rem;
    padding: 0.65rem 0.75rem;
}

.prompt-workspace-shell .editor-section-body,
.prompt-workspace-shell .editor-subsection-body {
    padding: 0.75rem;
}

.prompt-workspace-shell .editor-section-body[hidden],
.prompt-workspace-shell .editor-subsection-body[hidden] {
    display: none;
}

.prompt-workspace-shell .subject-section-head,
.prompt-workspace-shell .asset-card-head {
    gap: 0.55rem;
}

.prompt-workspace-shell .subject-actions {
    gap: 0.45rem;
}

.prompt-workspace-shell .action-button,
.prompt-workspace-shell .button-link,
.prompt-workspace-shell button.ghost {
    min-height: 2rem;
    padding: 0.4rem 0.6rem;
    font-size: 0.58rem;
    letter-spacing: 0;
}

.prompt-workspace-shell .asset-preview img {
    aspect-ratio: 16 / 9;
}

.prompt-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.55rem;
}

.prompt-actions button,
.prompt-actions .button-link {
    width: 100%;
}

.scenario-selection-summary {
    min-height: 2.6rem;
    padding: 0.72rem 0.85rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background: var(--surface-2);
    color: var(--text);
    font-size: 0.82rem;
    line-height: 1.4;
}

.scenario-selection-summary.is-empty {
    color: var(--muted);
    font-style: italic;
}

/* ── Prompt archive ─────────────────────────────────────── */

.prompt-archive {
    display: grid;
    gap: 0.85rem;
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-panel);
    background: var(--panel-bg-soft);
}

body:not(.is-prompt-archive-view) .prompt-archive {
    display: none;
}

body.is-prompt-archive-view [data-prompt-workspace-view] {
    display: none;
}

body.is-prompt-archive-view .prompt-archive {
    margin-top: 0;
}

.prompt-archive-head {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 1rem;
}

.prompt-archive-head h3 {
    margin: 0.12rem 0 0;
}

.prompt-archive-controls {
    display: grid;
    grid-template-columns: minmax(14rem, 1fr) minmax(10rem, 0.62fr);
    gap: 0.55rem;
    width: min(100%, 38rem);
}

.prompt-archive-search span,
.prompt-archive-project-filter span {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--secondary);
    font-family: var(--font-ui);
    font-size: 0.64rem;
    font-weight: 700;
    text-transform: uppercase;
}

.prompt-archive-list {
    display: grid;
    gap: 0.45rem;
}

.prompt-archive-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.75rem;
    align-items: center;
    min-width: 0;
    padding: 0.72rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background: color-mix(in srgb, var(--surface) 78%, var(--bg));
}

.prompt-archive-row-main {
    display: grid;
    grid-template-columns: 7.4rem minmax(0, 1fr) auto;
    gap: 0.75rem;
    align-items: center;
    min-width: 0;
}

.prompt-archive-thumb {
    position: relative;
    display: grid;
    place-items: center;
    width: 7.4rem;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background:
        linear-gradient(135deg, color-mix(in srgb, var(--surface-2) 80%, transparent), transparent),
        var(--bg);
    color: var(--text-dim);
    text-decoration: none;
}

.prompt-archive-thumb::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background:
        radial-gradient(circle at 28% 22%, color-mix(in srgb, var(--primary) 18%, transparent), transparent 34%),
        linear-gradient(120deg, transparent, color-mix(in srgb, var(--text) 10%, transparent), transparent);
    opacity: 0;
    transform: translateX(-18%);
    transition: opacity 150ms ease;
}

.prompt-archive-thumb.is-video-loading::before {
    opacity: 1;
    animation: archive-thumb-sweep 1.4s ease-in-out infinite;
}

.prompt-archive-thumb img,
.prompt-archive-thumb video {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.prompt-archive-thumb video[data-archive-video-thumb] {
    opacity: 0.18;
    transition: opacity 180ms ease, filter 180ms ease;
}

.prompt-archive-thumb.has-video-frame video[data-archive-video-thumb] {
    opacity: 1;
}

.prompt-archive-thumb.is-video-error video[data-archive-video-thumb] {
    opacity: 0.28;
    filter: grayscale(1);
}

.prompt-archive-thumb:hover {
    border-color: color-mix(in srgb, var(--primary) 45%, var(--line));
    text-decoration: none;
}

.prompt-archive-thumb-label {
    position: absolute;
    z-index: 2;
    left: 0.35rem;
    bottom: 0.35rem;
    max-width: calc(100% - 0.7rem);
    padding: 0.12rem 0.28rem;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 5px;
    background: rgba(0, 0, 0, 0.56);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.54rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.prompt-archive-thumb-placeholder {
    position: relative;
    z-index: 2;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.62rem;
}

@keyframes archive-thumb-sweep {
    0% {
        transform: translateX(-24%);
    }
    50% {
        transform: translateX(18%);
    }
    100% {
        transform: translateX(-24%);
    }
}

.prompt-archive-row:hover {
    border-color: var(--button-hover-border);
    background: var(--button-hover-bg);
}

.prompt-archive-row.is-current {
    border-color: color-mix(in srgb, var(--primary) 45%, var(--line));
    box-shadow: inset 2px 0 0 var(--primary);
}

.prompt-archive-main {
    display: grid;
    gap: 0.35rem;
    min-width: 0;
    color: var(--text);
    text-decoration: none;
}

.prompt-archive-main:hover {
    color: var(--text-bright);
    text-decoration: none;
}

.prompt-archive-title {
    overflow: hidden;
    color: var(--text-bright);
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.prompt-archive-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.prompt-archive-meta span {
    display: inline-flex;
    align-items: center;
    min-height: 1.35rem;
    padding: 0.12rem 0.4rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-size: 0.62rem;
}

.prompt-archive-actions {
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.prompt-archive-actions .action-button {
    min-height: 2rem;
    padding: 0.4rem 0.65rem;
    font-size: 0.58rem;
    letter-spacing: 0;
}

.prompt-archive-runs-toggle[aria-expanded="true"] {
    border-color: color-mix(in srgb, var(--primary) 40%, var(--line));
}

.prompt-archive-runs {
    min-width: 0;
    border-top: 1px solid var(--line);
    padding-top: 0.75rem;
}

.prompt-archive-runs-loading {
    padding: 0.8rem;
    border: 1px dashed var(--line);
    border-radius: var(--radius-control);
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.72rem;
}

.prompt-archive-runs-history {
    border-radius: var(--radius-control);
    background: color-mix(in srgb, var(--bg) 60%, var(--surface));
}

.prompt-archive-runs-history .run-history-head {
    padding: 0.85rem;
}

.prompt-archive-runs-history .run-history-body {
    padding: 0 0.85rem 0.85rem;
}

.prompt-archive-empty {
    padding: 0.9rem;
    border: 1px dashed var(--line);
    border-radius: var(--radius-control);
    text-align: center;
}

/* ── Inline checkbox ─────────────────────────────────────── */

.inline-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
    color: var(--secondary);
    cursor: pointer;
}

.inline-check-block {
    min-height: 100%;
    align-items: center;
    padding: 0.5rem 0.65rem;
    border: 1px solid var(--line);
    background: var(--surface);
}

.inline-check-card {
    gap: 0.75rem;
    min-height: 3rem;
    align-items: center;
}

.inline-check-card:hover {
    border-color: var(--primary);
    background: var(--bg);
    color: var(--text-bright);
}

.inline-check-copy {
    display: grid;
    gap: 0.15rem;
}

.inline-check-title-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.inline-check-title {
    color: var(--text-bright);
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

.inline-check-note {
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.66rem;
    font-weight: 500;
    letter-spacing: 0;
    text-transform: none;
    line-height: 1.35;
}

.inline-check-toggle {
    position: relative;
    gap: 0.85rem;
}

.inline-check-toggle.is-disabled {
    cursor: not-allowed;
    border-color: var(--line-dim);
    background: color-mix(in srgb, var(--surface) 76%, var(--bg));
}

.inline-check-toggle input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 1px;
    height: 1px;
    pointer-events: none;
}

.inline-check-switch {
    position: relative;
    width: 3.1rem;
    min-width: 3.1rem;
    height: 1.7rem;
    border: 1px solid var(--line);
    background: var(--bg);
    flex: 0 0 auto;
}

.inline-check-switch::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0.2rem;
    width: 1.05rem;
    height: 1.05rem;
    background: var(--secondary);
    transform: translateY(-50%);
    transition: transform 120ms ease, background-color 120ms ease;
}

.inline-check-state {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    padding: 0.15rem 0.4rem;
    border: 1px solid var(--line);
    color: var(--secondary);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1;
}

.inline-check-toggle input[type="checkbox"]:focus-visible + .inline-check-switch {
    outline: 1px solid var(--primary);
    outline-offset: 2px;
}

.inline-check-toggle input[type="checkbox"]:checked + .inline-check-switch {
    border-color: var(--primary);
    background: color-mix(in srgb, var(--primary) 14%, var(--bg));
}

.inline-check-toggle input[type="checkbox"]:checked + .inline-check-switch::before {
    transform: translate(1.45rem, -50%);
    background: var(--primary);
}

.inline-check-toggle input[type="checkbox"]:checked + .inline-check-switch + .inline-check-copy .inline-check-title {
    color: var(--primary);
}

.inline-check-toggle input[type="checkbox"]:checked + .inline-check-switch + .inline-check-copy .inline-check-state {
    border-color: color-mix(in srgb, var(--primary) 28%, var(--line));
    color: var(--primary);
}

.inline-check-toggle.is-disabled .inline-check-switch {
    border-color: var(--line-dim);
    background: var(--surface);
}

.inline-check-toggle.is-disabled .inline-check-note,
.inline-check-toggle.is-disabled .inline-check-state {
    color: var(--secondary);
}

.inline-check-toggle[data-toggle-mode="fast"] .inline-check-state,
.inline-check-toggle[data-toggle-mode="lite"] .inline-check-state {
    border-color: var(--line-dim);
}

.extend-module {
    display: grid;
    gap: 0.75rem;
    padding: 0.85rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background: var(--surface);
}

[data-duration-field].is-disabled,
[data-video-duration]:disabled {
    opacity: 0.45;
}

/* ── Character card ──────────────────────────────────────── */

.character-card {
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: 0.75rem;
    align-items: start;
    padding: 0.75rem;
    border: 1px solid var(--line);
    border-top: 0;
    background: var(--bg);
}

.character-card-copy {
    display: grid;
    gap: 0.35rem;
    min-width: 0;
}

.character-card-head {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 0.75rem;
}

.character-edit-form {
    display: grid;
    gap: 0.7rem;
    margin-top: 0.45rem;
    padding-top: 0.65rem;
    border-top: 1px solid var(--line);
}

.scenario-card {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 0.75rem;
    align-items: start;
    padding: 0.75rem;
    border: 1px solid var(--line);
    border-top: 0;
    background: var(--bg);
}

.scenario-card-copy {
    display: grid;
    gap: 0.35rem;
    min-width: 0;
}

.scenario-edit-form {
    display: grid;
    gap: 0.7rem;
    margin-top: 0.45rem;
    padding-top: 0.65rem;
    border-top: 1px solid var(--line);
}

.list .character-card:first-child {
    border-top: 1px solid var(--line);
}

.list .scenario-card:first-child {
    border-top: 1px solid var(--line);
}

.character-card img,
.scenario-card-image,
.placeholder {
    width: 72px;
    height: 72px;
    object-fit: cover;
    background: var(--surface);
    border: 1px solid var(--line);
    display: grid;
    place-items: center;
    font-size: 0.6rem;
    font-family: var(--font-mono);
    color: var(--secondary);
}

.scenario-card-image {
    width: 88px;
    height: 88px;
}

/* ── Output panel item (refactored) ────────────────────── */

.output-panel-item {
    padding: 1.25rem;
    border-bottom: 1px solid var(--line);
    background: var(--bg);
    display: grid;
    gap: 0.85rem;
}

.output-panel-item:last-child {
    border-bottom: 0;
}

.output-item-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.output-item-type strong {
    color: var(--primary);
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0;
}

.output-item-meta {
    color: var(--secondary);
    font-family: var(--font-mono);
    font-size: 0.68rem;
}

.output-media-wrap {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--line);
}

.output-video-player,
.output-audio-player {
    width: 100%;
    display: block;
}

.output-item-actions {
    margin-top: 0.25rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.output-item-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
    min-height: 40px;
    padding: 0 1rem;
    background: var(--button-bg);
    color: var(--text-bright);
    border: 1px solid var(--line);
    text-decoration: none;
}

.output-item-open {
    background: transparent;
    color: var(--text);
}

.output-item-download:hover {
    background: var(--button-hover-bg);
    color: var(--button-hover-text);
    border-color: var(--button-hover-border);
}

.output-item-external {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--primary);
    text-decoration: none;
    display: inline-block;
    padding: 0.5rem 0;
}

/* ── Output panel ────────────────────────────────────────── */

.output-panel {
    padding: 0.85rem;
    border-bottom: 1px solid var(--line);
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

.output-panel:last-child {
    border-bottom: 0;
}
.output-panel video,
.output-panel audio {
    width: 100%;
    margin: 0.6rem 0;
}

.output-panel p strong {
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.68rem;
    letter-spacing: 0;
}

.output-panel-shell {
    padding: 0;
    overflow: hidden;
    transition: width var(--sidebar-transition);
}

.output-panel-toggle {
    width: 100%;
    justify-content: space-between;
    align-items: stretch;
    padding: 0.85rem 0.9rem;
    border: 0;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
    color: inherit;
    text-transform: none;
    letter-spacing: 0;
}

.output-panel-toggle:hover {
    background: var(--button-hover-bg);
    color: inherit;
}

.output-panel-compact {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
}

.output-panel-icon {
    display: inline-grid;
    place-items: center;
    width: 2rem;
    min-width: 2rem;
    height: 2rem;
    border: 1px solid var(--primary);
    color: var(--primary);
    background: var(--bg);
    font-family: var(--font-mono);
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0;
    border-radius: var(--radius-control);
}

.output-panel-icon svg {
    width: 1rem;
    height: 1rem;
}

.output-panel-compact-copy {
    display: grid;
    gap: 0.12rem;
    min-width: 0;
    text-align: left;
}

.output-panel-compact-title {
    color: var(--text-bright);
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
}

.output-panel-compact-status {
    color: var(--secondary);
    font-family: var(--font-mono);
    font-size: 0.66rem;
    overflow-wrap: anywhere;
}

.output-panel-toggle-indicator {
    color: var(--primary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1;
    align-self: center;
}

.output-panel-body {
    display: grid;
    gap: 1rem;
    padding: 1rem;
    background: var(--surface);
}

.output-panel-head {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    align-items: start;
}

.output-panel-title {
    margin-bottom: 0;
}

.output-panel-state {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.18rem 0.5rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 0;
}

.output-panel-state-succeeded {
    color: var(--primary);
    border-color: color-mix(in srgb, var(--primary) 28%, var(--line));
}

.output-panel-state-failed {
    color: var(--error);
    border-color: color-mix(in srgb, var(--error) 28%, var(--line));
}

.output-panel-state-running {
    color: #5cb8ff;
    border-color: color-mix(in srgb, #5cb8ff 28%, var(--line));
}

.output-panel-state-queued,
.output-panel-state-accepted {
    color: var(--warning);
    border-color: color-mix(in srgb, var(--warning) 28%, var(--line));
}

.output-panel-state-empty {
    color: var(--secondary);
}

.output-media {
    display: grid;
    gap: 0.75rem;
}

.output-media video,
.output-media audio {
    width: 100%;
    max-width: 100%;
}

.output-media video {
    aspect-ratio: 16 / 9;
    background: var(--bg);
    border: 1px solid var(--line);
}

.output-media-artwork {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 1px solid var(--line);
    background: var(--bg);
    overflow: hidden;
}

.output-media-artwork img,
.output-media-placeholder {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.output-media-placeholder {
    display: grid;
    place-items: center;
    color: var(--secondary);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0;
}

.output-meta-list {
    display: grid;
    gap: 0.6rem;
    border-top: 1px solid var(--line);
    padding-top: 0.9rem;
}

.output-meta-item {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    align-items: start;
}

.output-meta-label {
    color: var(--secondary);
    font-family: var(--font-mono);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0;
}

.output-meta-value,
.output-meta-link {
    color: var(--text-bright);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-align: right;
    overflow-wrap: anywhere;
}

.output-panel-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.output-empty-state {
    display: grid;
    gap: 0.5rem;
    padding: 1rem;
    border: 1px solid var(--line);
    background: var(--bg);
}

.output-empty-error {
    border-color: color-mix(in srgb, var(--error) 28%, var(--line));
}

.output-empty-title {
    color: var(--text-bright);
    font-family: var(--font-display);
    font-size: 0.82rem;
    font-weight: 600;
}

.output-panel-note {
    padding-top: 0.25rem;
}

.run-history-panel {
    display: grid;
    gap: 1rem;
}

.run-history-head {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: start;
    flex-wrap: wrap;
}

.run-history-head-actions {
    display: flex;
    gap: 0.6rem;
    align-items: center;
    flex-wrap: wrap;
}

.run-history-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.35rem;
    min-width: 2.35rem;
    padding-inline: 0;
    gap: 0;
}

.run-history-head-actions .button-link {
    min-height: 2.35rem;
    padding: 0.5rem 0.78rem;
    font-size: 0.62rem;
    letter-spacing: 0;
}

.run-history-head-actions .run-history-toggle {
    min-height: 2.35rem;
    padding: 0;
    font-size: 0.62rem;
    letter-spacing: 0;
}

.run-history-toggle-indicator {
    color: var(--secondary);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    line-height: 1;
}

.run-history-body {
    display: grid;
    gap: 1rem;
}

.run-history-list {
    display: grid;
    gap: 0.55rem;
}

.run-history-item {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    column-gap: 0.85rem;
    row-gap: 0.45rem;
    align-items: center;
    padding: 0.68rem 0.78rem 0.68rem 2.35rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--panel-bg-soft);
}

.run-history-item.is-favorite {
    border-color: color-mix(in srgb, var(--warning) 34%, var(--line));
    background: color-mix(in srgb, var(--warning-soft) 10%, var(--bg));
}

.run-history-favorite-form {
    position: absolute;
    top: 50%;
    left: 0.82rem;
    width: 0.95rem;
    height: 0.95rem;
    transform: translateY(-50%);
}

.run-history-favorite,
.run-history-favorite[type="submit"] {
    width: 0.95rem;
    min-width: 0.95rem;
    max-width: 0.95rem;
    height: 0.95rem;
    min-height: 0.95rem;
    padding: 0;
    border: 1px solid transparent;
    border-radius: 50%;
    background: transparent;
    color: color-mix(in srgb, var(--text-dim) 72%, transparent);
    line-height: 1;
    display: inline-grid;
    place-items: center;
    font-size: 0.62rem;
    opacity: 0.72;
}

.run-history-favorite:hover,
.run-history-favorite:focus-visible,
.run-history-favorite[type="submit"]:hover,
.run-history-favorite[type="submit"]:focus-visible {
    color: color-mix(in srgb, var(--warning) 82%, var(--text));
    border-color: transparent;
    background: transparent;
    opacity: 1;
}

.run-history-favorite.is-active,
.run-history-favorite.is-active[type="submit"] {
    color: var(--warning);
    border-color: transparent;
    background: transparent;
    opacity: 0.92;
}

.run-history-main {
    min-width: 0;
    display: grid;
    gap: 0.35rem;
}

.run-history-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.run-history-id,
.run-history-date {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--secondary);
}

.run-history-preview {
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.run-history-actions {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.5rem;
    justify-content: flex-end;
}

.run-history-actions .button-link,
.run-history-actions button {
    min-height: 2.3rem;
    padding: 0.45rem 0.75rem;
    font-size: 0.62rem;
    letter-spacing: 0;
}

.run-history-pager {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    padding-top: 0.25rem;
}

.run-history-page-meta {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--secondary);
}

.button-link.is-disabled,
.ghost.button-link.is-disabled {
    pointer-events: none;
    opacity: 0.45;
}

.prompt-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.prompt-actions > * {
    flex: 1 1 220px;
}

.prompt-editor-form .prompt-actions {
    grid-row: 6;
    align-self: end;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.55rem;
}

.prompt-editor-form .prompt-actions > * {
    width: 100%;
    min-width: 0;
    flex: 0 1 auto;
}

.prompt-run-button {
    border-color: var(--primary);
    color: var(--button-contrast);
    background: var(--primary-button-bg);
    min-height: 2.75rem;
}

.prompt-run-button:hover {
    background: var(--primary-button-hover-bg);
    color: var(--button-contrast);
}

.prompt-run-button.is-loading::after {
    content: "";
    width: 0.8rem;
    height: 0.8rem;
    border-radius: 50%;
    border: 2px solid currentColor;
    border-right-color: transparent;
    animation: button-spin 0.8s linear infinite;
}

@keyframes button-spin {
    to {
        transform: rotate(360deg);
    }
}

/* ── Theme switch ───────────────────────────────────────── */

.theme-control {
    display: grid;
    gap: 0.45rem;
    padding: 0.75rem 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    width: 100%;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--line);
    background: var(--theme-toggle-bg);
    color: var(--theme-toggle-label);
    text-transform: none;
    letter-spacing: 0;
}

.theme-toggle:hover {
    background: var(--button-hover-bg);
    color: var(--button-hover-text);
    border-color: var(--button-hover-border);
}

.theme-toggle-copy {
    display: grid;
    gap: 0.1rem;
    text-align: left;
}

.theme-toggle-title {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
}

.theme-toggle-status {
    font-family: var(--font-mono);
    font-size: 0.66rem;
    color: var(--muted);
}

.theme-toggle-visual {
    position: relative;
    width: 42px;
    height: 24px;
    border-radius: 999px;
    background: var(--theme-toggle-track);
    flex-shrink: 0;
}

.theme-toggle-visual::after {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--theme-toggle-thumb);
    transition: transform 120ms ease;
}

[data-theme="light"] .theme-toggle-visual::after {
    transform: translateX(18px);
}

.login-theme {
    position: fixed;
    top: 1rem;
    right: 1rem;
    width: min(220px, calc(100vw - 2rem));
    margin-bottom: 0;
}

.sidebar-footer {
    display: grid;
    gap: 0.75rem;
    min-width: 0;
}

.sidebar-logout {
    width: 100%;
    font-size: 0.62rem;
    justify-content: flex-start;
    padding-inline: 0.7rem;
}

.sidebar-build-info {
    margin: -0.1rem 0 0;
    color: var(--text-soft);
    font-family: var(--font-mono);
    font-size: 0.56rem;
    line-height: 1.2;
    letter-spacing: 0;
    opacity: 0.72;
    overflow-wrap: anywhere;
}

@media (min-width: 768px) {
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .sidebar {
        padding-inline: 0.6rem;
    }

    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .sidebar-brand {
        justify-content: center;
        min-height: 2.5rem;
    }

    /* Logo collapsed: show only icon mark — keep it small but proportional */
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .sidebar-logo {
        max-width: 2.4rem;
        max-height: 2.4rem;
    }

    /* Hide all text copy in collapsed mode */
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        [data-sidebar-copy],
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .theme-toggle-copy,
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .sidebar-count,
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .sidebar-section-title-row {
        display: none !important;
    }

    /* Nav links: uniform square icon buttons */
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .nav
        a,
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .sidebar-logout {
        justify-content: center;
        padding-inline: 0;
        min-height: 2.85rem;
        width: 100%;
    }

    /* Theme toggle: centered, no text */
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .theme-toggle {
        justify-content: center;
        padding-inline: 0.5rem;
    }

    /* Section wrapper: remove horizontal padding so icon is flush */
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .sidebar-section,
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .theme-control {
        padding-inline: 0;
    }

    /* Accordion toggle: collapse into icon-only button */
    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .sidebar-accordion-toggle {
        justify-content: center;
        padding-inline: 0;
        min-height: 2.85rem;
    }

    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .sidebar-section-head {
        grid-template-columns: auto;
        justify-items: center;
        gap: 0;
    }

    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .sidebar-accordion-body {
        display: none !important;
    }

    :is(.shell.is-sidebar-collapsed, html[data-sidebar-collapsed="true"] .shell)
        .sidebar-accordion-indicator {
        display: none;
    }
}

@media (max-width: 767px) {
    .sidebar-logo {
        width: 2.75rem;
        height: 2.75rem;
    }
}

@media (min-width: 1280px) {
    [data-output-workspace].is-output-panel-collapsed .output-panel-shell {
        min-width: 0;
    }

    [data-output-workspace].is-output-panel-collapsed .output-panel-toggle {
        justify-content: space-between;
        padding: 0.85rem 0.9rem;
        min-height: auto;
    }

    [data-output-workspace].is-output-panel-collapsed .output-panel-compact {
        flex-direction: row;
        justify-content: flex-start;
    }

    [data-output-workspace].is-output-panel-collapsed .output-panel-body {
        display: none !important;
    }

    [data-output-workspace].is-output-panel-collapsed .output-panel-toggle-indicator {
        display: inline;
    }

}

.empty-state {
    padding: 0.75rem 0;
    font-size: 0.72rem;
}

.mono-meta {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--secondary);
    white-space: nowrap;
}

.modal-title {
    margin-bottom: 0;
}

.role-hint {
    color: var(--secondary);
}

.section-spaced {
    margin-top: 1.25rem;
}

.run-status {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--primary);
}

.run-meta {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--secondary);
}

.card-title {
    font-family: var(--font-display);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-bright);
    display: block;
    margin-bottom: 0.2rem;
}

.card-note {
    font-size: 0.75rem;
    color: var(--text);
    margin-top: 0.35rem;
    font-family: var(--font-mono);
    line-height: 1.4;
}

.login-title {
    font-size: 0.95rem;
    margin: 0.2rem 0 1rem;
}

.login-alert {
    margin-bottom: 0.75rem;
}

.login-note {
    margin-top: 0.75rem;
    font-size: 0.65rem;
}

/* ── Utility ─────────────────────────────────────────────── */

.is-hidden {
    display: none !important;
}

/* ── Scrollbar ───────────────────────────────────────────── */

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg);
}
::-webkit-scrollbar-thumb {
    background: var(--line);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

/* ── Responsive ──────────────────────────────────────────── */
/* Desktop: >= 1280px | Tablet: 768px - 1279px | Mobile: <= 767px */

@media (max-width: 1279px) {
    .shell {
        grid-template-columns: 220px minmax(0, 1fr);
    }

    .main {
        padding: 1.25rem;
    }

    .workspace-grid {
        grid-template-columns: 1fr;
    }

    .studio-main {
        height: auto;
        overflow: visible;
    }

    .studio-workspace {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        height: auto;
        min-height: 0;
        overflow: visible;
    }

    .studio-composer-panel {
        grid-column: auto;
        grid-row: auto;
    }

    .studio-composer-panel {
        order: -1;
    }

    .prompt-editor-form {
        grid-template-columns: 1fr;
    }

    .prompt-tool-title,
    .prompt-tool-meta,
    .prompt-workspace-shell,
    .prompt-workspace-textarea,
    .prompt-result-stage,
    .prompt-actions,
    .prompt-editor-form > .editor-alert,
    .prompt-editor-form > [data-voice-editor] {
        grid-column: 1;
        grid-row: auto;
    }

    .prompt-workspace-shell {
        max-height: none;
    }

    .prompt-workspace-textarea textarea {
        min-height: 360px;
    }

    .prompt-result-stage {
        margin-top: 0;
        height: clamp(420px, 58vh, 560px);
        min-height: 0;
        grid-template-rows: auto minmax(0, 1fr) auto;
        padding: 1rem;
    }

    .prompt-archive-head {
        flex-direction: column;
    }

    .prompt-archive-controls,
    .prompt-archive-row,
    .prompt-archive-row-main {
        grid-template-columns: 1fr;
    }

    .prompt-archive-head,
    .prompt-archive-row,
    .prompt-archive-row-main,
    .prompt-archive-actions {
        align-items: stretch;
    }

    .prompt-archive-controls,
    .prompt-archive-search,
    .prompt-archive-project-filter,
    .prompt-archive-actions .action-button {
        width: 100%;
    }

    .prompt-archive-thumb {
        width: 100%;
        max-width: 18rem;
    }

    .studio-composer-panel.has-active-prompt .prompt-result-stage {
        margin-top: 0;
        height: clamp(420px, 58vh, 560px);
    }

    .studio-composer-panel {
        height: auto;
        overflow: visible;
    }

    .composer-layer .editor-section-toggle {
        min-height: 3rem;
    }

    [data-output-workspace],
    [data-output-workspace].is-output-panel-collapsed,
    html:not([data-output-panel-expanded="true"]) [data-output-workspace] {
        grid-template-columns: 1fr;
    }

    .grid.three {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .asset-grid.three {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .subject-slot-head,
    .asset-card-head,
    .output-panel-head,
    .output-meta-item,
    .run-history-item {
        flex-wrap: wrap;
    }
}

@media (max-width: 767px) {
    .prompt-result-stage,
    .studio-composer-panel.has-active-prompt .prompt-result-stage {
        height: clamp(360px, 56vh, 460px);
        min-height: 0;
    }

    .prompt-result-stage.is-expanded {
        inset: 0.5rem;
        padding: 0.7rem;
        gap: 0.65rem;
    }

    .prompt-result-stage.is-expanded .prompt-result-stage-head {
        align-items: center;
    }

    .prompt-result-stage.is-expanded .studio-preview-title {
        font-size: 0.95rem;
    }

    .prompt-result-stage.is-expanded .prompt-result-media video {
        max-height: calc(100vh - 14rem);
    }

    .shell {
        grid-template-columns: 1fr;
        display: block;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 4.5rem;
        z-index: 1000;
        border-right: 0;
        border-bottom: 1px solid var(--line);
        padding: 0 1.25rem;
        overflow: hidden;
        transition: height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        background: var(--surface);
    }

    .shell:not(.is-sidebar-collapsed) .sidebar {
        height: 100vh;
        overflow-y: auto;
        padding-bottom: 3rem;
    }

    .sidebar-head {
        min-height: 4.5rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        cursor: pointer;
    }

    .sidebar-head::after {
        content: "MENU";
        font-family: var(--font-mono);
        font-size: 0.65rem;
        font-weight: 700;
        color: var(--primary);
        border: 1px solid var(--line);
        padding: 0.35rem 0.65rem;
        letter-spacing: 0;
        flex-shrink: 0;
    }

    .shell:not(.is-sidebar-collapsed) .sidebar-head::after {
        content: "CLOSE";
        background: var(--primary);
        color: var(--button-contrast);
        border-color: var(--primary);
    }

    .sidebar-main,
    .sidebar-footer {
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.2s ease;
        padding-top: 1rem;
    }

    .shell:not(.is-sidebar-collapsed) .sidebar-main,
    .shell:not(.is-sidebar-collapsed) .sidebar-footer {
        opacity: 1;
        pointer-events: auto;
    }

    .sidebar-logo {
        width: auto;
        height: 2.5rem;
        max-width: 120px;
    }

    .main {
        padding: 5.75rem 1.15rem 1.5rem;
    }

    .grid.two,
    .grid.three,
    .asset-grid.two,
    .asset-grid.three {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .asset-card[data-asset-kind="frame"] {
        grid-template-columns: 1fr;
    }

    .asset-card[data-asset-kind="frame"] .asset-preview {
        grid-column: 1;
        grid-row: auto;
    }

    .editor-header,
    .editor-toggle,
    .inline-between,
    .subject-slot-head,
    .asset-card-head,
    .card-link {
        flex-direction: column;
        gap: 1rem;
    }

    .nav a,
    .sidebar-accordion-toggle,
    .editor-toggle,
    button,
    .button,
    select,
    input[type="text"],
    input[type="number"],
    input[type="password"] {
        min-height: 48px !important;
    }

    .nav a {
        font-size: 0.75rem;
        padding: 0.85rem 1rem;
    }

    .sidebar-prompt-item {
        padding: 1rem;
    }

    .sidebar-section-title {
        font-size: 0.78rem;
        padding: 0.5rem 0;
    }

    .hero h2 {
        font-size: 1.25rem;
    }

    .hero p {
        font-size: 0.85rem;
    }

    .subject-actions {
        justify-content: stretch;
        width: 100%;
    }

    .subject-actions > * {
        width: 100%;
        flex: 1 1 100%;
    }

    .editor-footer {
        justify-content: stretch;
        padding: 1.25rem 1.15rem;
    }

    .editor-action,
    .hero-action-form,
    .prompt-actions > * {
        width: 100%;
        min-width: 0;
    }

    .mono-meta {
        white-space: normal;
    }

    .run-history-actions {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .run-history-item {
        grid-template-columns: minmax(0, 1fr);
        align-items: start;
    }

    .run-history-actions {
        grid-column: 1;
    }

    .run-history-preview {
        white-space: normal;
    }

    .scenario-card {
        grid-template-columns: 1fr;
    }

    .scenario-card-image {
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 9;
    }

    .run-history-pager {
        align-items: flex-start;
    }

    .login-theme {
        position: static;
        width: 100%;
        max-width: 360px;
        margin: 1rem auto 0;
        padding: 0 1.5rem;
    }
}